数字图像中的隐写术技术

English | PDF,EPUB | 2018 (2019 Edition) | 131 Pages | ISBN : 3319785354 | 21.41 MB

This book covers newly developed and novel Steganography techniques and algorithms. The book outlines techniques to provide security to a variety of applications using Steganography, with the goal of both hindering an adversary from decoding a hidden message, and also preventing an adversary from suspecting the existence of covert communications. The book looks into applying these newly designed and improved algorithms to provide a new and efficient Steganographic system, called Characteristic Region-Based Image Steganography (CR-BIS). The algorithms combine both the robustness of the Speeded-Up Robust Features technique (SURF) and Discrete Wavelet Transform (DWT) to achieve characteristic region Steganography synchronization. The book also touches on how to avoid hiding data in the whole image by dynamically selecting characteristic regions for the process of embedding.

Applies and discusses innovative techniques for hiding text in a digital image file or even using it as a key to the encryption; Provides a variety of methods to achieve characteristic region Steganography synchronization; Shows how Steganography improves upon cryptography by using obscurity features.

这本书涵盖了新开发和新颖的隐写术技术与算法。本书概述了利用隐写术保护各种应用的安全性方法，目标是既阻止对手解码隐藏的消息，又防止对手怀疑存在秘密通信。本书探讨了如何将这些全新设计并改进后的算法应用于一种新的高效隐写系统——基于特征区域的图像隐写术（CR-BIS）。 这些算法结合了加速稳健特征技术（SURF）和离散小波变换（DWT），以实现特征区域隐写同步。书中还讨论了如何动态选择嵌入过程中的特征区域，从而避免将数据隐藏在整个图像中。 此外，本书还介绍了在数字图像文件中隐藏文本的创新方法，甚至将其用作加密密钥；提供了多种实现特征区域隐写术同步的方法；展示了隐写术通过使用混淆特性来改进密码学的方式。

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